Work machine
AssigneeKubota Corporation
InventorsKohei Ono, Masahiro Yamada
Life of this patent
Estimating the term…
Abstract
A work machine according to the present invention includes a manual operating tool configured to operate a hydraulic actuator; an operation amount detector configured to detect an operation amount of the manual operating tool; a hydraulic pump configured to generate a hydraulic pressure to be supplied to the hydraulic actuator; an electric pump motor configured to change an output characteristic of the hydraulic pump in response to a rotary force to be given to the hydraulic pump; a motor load detector configured to detect a motor load of the pump motor; and a pump motor controller configured to determine a necessary output characteristic based on the operation amount and the motor load and control the pump motor based on the output characteristic.
Claims6
A work machine, comprising:
- a hydraulic actuator;
- a manual operating tool configured to operate the hydraulic actuator;
- an operation amount detector configured to detect an operation amount of the manual operating tool;
- a hydraulic pump configured to generate a hydraulic pressure to be supplied to the hydraulic actuator;
- an electric pump motor configured to change an output characteristic of the hydraulic pump in response to a rotary force to be given to the hydraulic pump;
- a motor load detector configured to detect a motor load of the pump motor;
- a pump motor controller configured to determine the output characteristic based on the operation amount and the motor load and control the pump motor based on the output characteristic;
- and
- a workload estimator configured to estimate a workload of the hydraulic actuator based on the operation amount, wherein the pump motor controller determines a necessary output characteristic based on the operation amount and the workload and controls the pump motor based on the output characteristic.
A work machine, comprising:
- a hydraulic actuator;
- a manual operating tool configured to operate the hydraulic actuator;
- an operation amount detector configured to detect an operation amount of the manual operating tool;
- a hydraulic pump configured to generate a hydraulic pressure to be supplied to the hydraulic actuator;
- an electric pump motor configured to change an output characteristic of the hydraulic pump in response to a rotary force to be given to the hydraulic pump;
- a workload estimator configured to estimate a workload of the hydraulic actuator based on the operation amount;
- and
- a pump motor controller configured to determine the output characteristic based on the operation amount and the workload and control the pump motor based on the output characteristic.
Dependencies are inferred from the claim text.